There is an abundance of intriguing claims circulating about skin. It’s three times heavier than the brain, the size of a single bedsheet and each square inch has six metres of blood vessels ... but zoom in beyond what the natural eye can see and the skincare science starts to sound almost alien.
Millions – even billions if you’re particularly popular – of tiny bacteria live, work and play on your complexion. Just 10 years ago, scientists thought it was 200, but we now know the skin
